000
AXPZ20 KNHC 011518
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC MON MAR 01 2010

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...
AXIS IS ALONG 4N77W 3N100W 6N125W 5N140W. SCATTERED MODERATE 
CONVECTION WITHIN 150 NM N OF AXIS FROM 106W TO 110W. SCATTERED 
MODERATE TO STRONG CONVECTION WITHIN 120 NM S OF AXIS FROM 134W 
TO 140W.

...DISCUSSION...
AN UPPER LEVEL TROUGH IS OVER THE NW PORTION OF THE DISCUSSION 
AREA N OF 20N W OF 135W. A 115-125 KT JET STREAM ENTERS THE AREA 
AT 26N140W TO 32N134W. MODERATE TO STRONG SUBSIDENCE IS NW OF 
THE JET...WITH SCATTERED TO BROKEN HIGH CLOUDS WITHIN 250 NM SE 
OF THE JET. DOWNSTREAM UPPER LEVEL RIDGE WITH AXIS FROM 32N120W 
TO 25N120W. UPPER LEVEL MOISTURE IS MOVING OVER THE TOP OF THE 
RIDGE OTHERWISE MODERATE TO STRONG SUBSIDENCE IS FROM 20N-30N W 
OF 110W. A STRONG WELL DEFINED UPPER LEVEL CYCLONIC CIRCULATION
IS CENTERED OVER CENTRAL TEXAS WITH TROUGH EXTEND S ACROSS 
EASTERN MEXICO. A 125 KT NLY JETSTREAM IS ON THE W OF THE TROUGH 
AND EXTENDS FROM SW NEW MEXICO AND ACROSS NE MEXICO. IN THE DEEP 
TROPICS AN EAST TO WEST UPPER LEVEL RIDGE EXTENDS FROM AN 
ANTICYCLONIC CIRCULATION OVER VENEZUELA ACROSS PANAMA AND COSTA 
RICA TO 9N105W. ALSO IN THE DEEP TROPICS AND UPPER LEVEL TROUGH
WITH AXIS FROM 18N125W TO THE EQUATOR AT 134W. HIGH LEVEL 
MOISTURE IS BEING ADVECTED NE WITHIN 480 NM E OF THE TROUGH.

A COLD FRONT IS OVER THE NW PORTION OF THE AREA ENTERING THE ARE 
AT 32N134W TO 25N140W. A FEW LIGHT SHOWERS ARE WITHIN 120 NM E 
OF THE FRONT. STRONG NW WINDS ARE W OF THE FRONT AND LARGE NW 
SWELLS ARE MOVING IN BEHIND THE FRONT. THE SWELLS COULD REACH 20 
FT TONIGHT. A 1019 MB HIGH PRES IS E OF THE TROUGH CENTERED NEAR 
27N122W. A SURFACE TROUGH IS ANALYZED ALONG THE ITCZ FROM 10N103W
TO 2N108W SCATTERED SHOWERS ARE WITHIN 150 NM E OF THE TROUGH 
FROM 4N-8N.

A COLD FRONT CURRENTLY MOVING OFF THE TEXAS COAST INTO THE GULF 
OF MEXICO WILL MOVE RAPIDLY E WITH STRONG HIGH PRES BUILDING 
BEHIND THE FRONT. THIS WILL RESULT IN GALE FORCE WINDS ONCE 
AGAIN INCREASING IN THE GULF OF TEHUANTEPEC ON TUE. STRONG WINDS 
IN THE GULF OF PAPAGAYO AND THE GULF OF PANAMA WILL DECREASE 
THIS EVENING.

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
DGS